Guryaha Magnetik ee Birta Cawlan

Isbarbardhigga Birta Cawlan				Qaab-dhismeedka yar-yar (Jajabyada Mugga)
Shiinaha (GB/T 9439)	ISO 185	ASTM A48/A48M	EN 1561	Dhismaha Matrix
HT100 (HT10-26)	100	No.20 F11401	EN-GJL-100	Pearlite: 30-70 s, jajab aan dhab ahayn; Ferrite: 30-70; Fosfooraska Binary Eutectic: ＜7％
HT150 (HT15-33)	150	No.25A F11701	EN-GJL-150	Pearlite: 40-90 , jajabyo aan qallafsaneyn oo dhexdhexaad ah; Ferrite: 10-60; Fosfooraska Binary Eutectic: ＜7％
HT200 (HT20-40)	200	No.30A F12101	EN-GJL-200	Pearlite: ：95％, jajab dhexdhexaad ah; Ferrite 5; Fosfooraska Binary Eutectic
HT250 (HT25-47)	250	No.35A F12401 No.40A F12801	EN-GJL-250	Pearlite: ：98％ Jilibka khafiifka ah ee dhexdhexaadka ah; Fosfooraska Binary Eutectic:＜2％
HT300 (HT30-54)	300	No.45A F13301	EN-GJL-300	Pearlite: ：98％ Jilibka khafiifka ah ee dhexdhexaadka ah; Fosfooraska Binary Eutectic:＜2％
HT350 (HT35-61)	350	No.50A F13501	EN-GJL-350	Pearlite: ：98％ Jilibka khafiifka ah ee dhexdhexaadka ah; Fosfooraska Binary Eutectic: ＜1％

 

Astaamaha birta cawl leh ee birta cawl aad ayey u kala duwan yihiin, laga bilaabo dafitaan hoose iyo xoog xoog wax ku qasbi ah oo sarreeya ilaa awood sarraysa iyo xoog qasab ah oo hooseeya. Isbeddelladani waxay inta badan ku xidhan yihiin qaab-dhismeedka yar ee kabka cawl. Ku darista walxaha alloying si loo helo sifooyinka magnetic loo baahan yahay waxaa lagu gaaraa iyada oo la beddelo qaab dhismeedka birta cawl.

Ferrite waxa uu leeyahay daalacashada magnetic sare iyo luminta hysteresis hooseeya; pearlite waa ka soo horjeeda, waxa ay leedahay permeability magnetic hooseeya iyo luminta hysteresis weyn. Pearlite waxaa loo sameeyay ferrite iyadoo la tirtirayo daawaynta kulaylka, taas oo kordhin karta qulqulka magnetic afar jeer. Kordhinta badarka ferrite waxay yarayn kartaa luminta hysteresis. Joogitaanka sibidhku wuxuu yarayn doonaa cufnaanta qulqulka magnetic, qulqulka iyo joogsiga, iyada oo la kordhinayo qulqulka iyo luminta hysteresis. Joogitaanka garaafyada qalafsan ayaa yarayn doona sii joogida. Beddelka garaafiga nooca A-garaafiga ah (garaafka u qaabaysan flake kaas oo si isku mid ah loo qaybiyay jiho la'aan) loona beddelo garaafyada nooca D-garaafiga ah (graphite si fiican u laalaaban oo leh qaybin aan jiho lahayn oo u dhaxaysa dendrites) waxay si weyn u kordhin kartaa kicinta magnetic iyo xoogga qasabka .

Kahor inta aan la gaarin heerkulka muhiimka ah ee aan magnetka ahayn, kor u kaca heerkulku wuxuu si weyn u kordhiyaa qulqulka magnetka ee birta cawl. Barta Curie ee birta saafiga ah waa α-γ heerkulka kala-guurka ee 770°C. Marka tirada guud ee silikonku ay tahay 5%, barta Curie waxay gaari doontaa 730°C. Heerkulka barta Curie ee sibidhka oo aan lahayn silikoon waa 205-220 ° C.

Qaab dhismeedka shaxanka ee darajooyinka birta cawlan ee sida caadiga ah loo isticmaalo waa pearlite, awoodooda ugu badanna waa inta u dhaxaysa 309-400 μH/m.

 

Sifooyinka Magnet ee Birta Cast ee Cawlan
Koodhka Birta Cawlan	Halabuurka Kiimikada (%)
	C	Si	Mn	S	P	Ni	Cr
A	3.12	2.22	0.67	0.067	0.13	03.03	0.04
B	3.30	2.04	0.52	0.065	1.03	0.34	0.25
C	3.34	0.83 - 0.91	0.20 - 0.33	0.021 - 0.038	0.025 - 0.048	0.04	02.02
Guryaha Magnetka		A		B		C
		Pearlite	Ferrite	Pearlite	Ferrite	Pearlite	Ferrite
Kaarboon Kaarboon w(%)		0.70	0.06	0.77	0.11	0.88	/
Joogista / T		0.413	0.435	0.492	0.439	0.5215	0.6185
Xoogaga qasabka ah / A•m-1		557	199	716	279	637	199
Hoosudhaca Dhumucda / J•m-3•Hz-1 (B=1T)		2696	-696	2729	1193	2645	938
Xoogga Goobta Magnetik / kA•m-1 (B=1T)		15.9	-5.9	8.7	8.0	6.2	4.4
Max. Dhererka Birlabka / μH•m-1		396	1960kii	353	955	400	1703
Xoogga Goobta Magnetka marka Max. Dhererka Birlabka / A•m-1		637	199	1035	318	1114	239
Iska caabin / μΩ•m		0.73	0.71	0.77	0.75	0.42	0.37

 

Halkan kuwan soo socda ayaa ah sifooyinka farsamada ee birta cawl:

Astaamaha Makaanikada ee Birta Cas ee Cawlan
Shayga sida ku cad DIN EN 1561	Cabbir	Unug	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350
			EN-JL 1020	EN-JL 1030	EN-JL 1040	EN-JL 1050	EN-JL 1060
Xoogga Jilicsan	Rm	MPA	150-250	200-300	250-350	300-400	350-450
0.1% Xoogga Wax-soosaarka	Rp0,1	MPA	98-165	130-195	165-228	195-260	228-285
Xoogga Fidinta	A	%	0,3 - 0,8	0,3 - 0,8	0,3 - 0,8	0,3 - 0,8	0,3 - 0,8
Xoog isku dhejisan	σdB	MPa	600	720	840	960	1080
0,1% Xoog Cadaadis ah	σd0,1	MPa	195	260	325	390	455
Xoog Jilicsan	σbB	MPa	250	290	340	390	490
Schuifspanning	σaB	MPa	170	230	290	345	400
Cadaadis xiiran	TtB	MPa	170	230	290	345	400
Modules ee barti	E	GPA	78 - 103	88 - 113	103 - 118	108 - 137	123 - 143
Lambarka sunta	v	-	0,26	0,26	0,26	0,26	0,26
adkaanta brinell		HB	160 - 190	180 - 220	190 - 230	200 - 240	210 - 250
Ductility	σbW	MPa	70	90	120	140	145
Xiisadda iyo cadaadiska ayaa isbeddela	σzdW	MPa	40	50	60	75	85
Xoogga Jebinta	Klc	N/mm3/2	320	400	480	560	650
Cufnaanta		g/cm3	7,10	7,15	7,20	7,25	7,30